<!-- Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/ -->
<!doctype html>
<html>
  <head>
    <meta charset="utf-8"/>
    <title>Debugger test page</title>
  </head>

  <body>
    <button>Click me!</button>

    <script type="text/javascript">
      window.addEventListener("load", function onload() {
        var button = document.querySelector("button");
        button.onclick = function () {
          debugger;
        };
      });
    </script>
  </body>

</html>
